Results 11 to 20 of about 4,559 (313)
Quantum Instability of de Sitter Space [PDF]
Physical Review Letters, 1986 The graviton propagator in a de Sitter background is found to be divergent. We show that as a consequence of this divergence, de Sitter space is not a solution of the equations of motion of the complete theory. If we start from de Sitter space as a classical ground state, quantum corrections change it into flat Minkowski space.
, Antoniadis, , Iliopoulos, , Tomaras
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Spinors in (Anti-)de Sitter Space
Journal of High Energy Physics, 2023 Abstract We explore analytical aspects of correlators involving Dirac spinors in d + 1-dimensional de Sitter space. Adapting the formalism of Sleight and Taronna, we show how to relate processes involving fermions in the in-in formalism to equivalent Witten diagrams in (complexified) Euclidean anti-de Sitter space. We exemplify the
Vladimir Schaub
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New coordinates for de Sitter space and de Sitter radiation
Physics Letters B, 2002 We introduce a simple coordinate system covering half of de Sitter space. The new coordinates have several attractive properties: the time direction is a Killing vector, the metric is smooth at the horizon, and constant-time slices are just flat Euclidean space. We demonstrate the usefulness of the coordinates by calculating the rate at which particles
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“Massive” spin-2 field in de Sitter space [PDF]
Journal of Mathematical Physics, 2003 T. Garidi, J-P. Gazeau, M. V. Takook
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Loops in Anti–de Sitter Space [PDF]
Physical Review Letters, 2018 6 ...
Bertan, Igor, Sachs, Ivo
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de Sitter space and spatial topology [PDF]
Classical and Quantum Gravity, 1999 Morrow-Jones and Witt have shown that generic spatial topologies admit initial data that evolve to locally de Sitter spacetimes under Einstein's equations. We simplify their arguments, make them a little more general, and solve for the global time evolution of the wormhole initial data considered by them. Finally we give explicit examples of locally de
Bengtsson, Ingemar, Holst, Sören
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Back(reaction) to the future in the Unruh-de Sitter state
Journal of High Energy Physics, 2019 Motivated by black hole physics, we define the Unruh state for a scalar field in de Sitter space. Like the Bunch-Davies state, the Unruh-de Sitter state appears thermal to a static observer.
Lars Aalsma +2 more
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Generalized de Sitter space [PDF]
Physical Review D, 1999 10 pages, RevTex, to appear in Phys.
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Generation of genuine tripartite entanglement for continuous variables in de Sitter space
Physics Letters B, 2020 We study the distribution of quantum entanglement for continuous variables among causally disconnected open charts in de Sitter space. It is found that genuine tripartite entanglement is generated among the open chart modes under the influence of ...
Jieci Wang +3 more
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Chaos and complementarity in de Sitter space
Journal of High Energy Physics, 2020 We consider small perturbations to a static three-dimensional de Sitter geometry. For early enough perturbations that satisfy the null energy condition, the result is a shockwave geometry that leads to a time advance in the trajectory of geodesics ...
Lars Aalsma, Gary Shiu
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